×

Method and apparatus for detecting ocular disease and abnormalities

  • US 5,989,194 A
  • Filed: 02/09/1998
  • Issued: 11/23/1999
  • Est. Priority Date: 02/09/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. Apparatus for detecting ocular disease and abnormalities, comprising:

  • a headrest for supporting a patient'"'"'s head and aligning the patient'"'"'s eyes on a selected optical axis;

    a photo-imaging device having a lens aligned on said selected optical axis, said lens being spaced from said headrest a predetermined focal distance and operable to receive a retinal reflection from the patient'"'"'s eyes;

    a flash unit for generating a flash beam of light generally along said selected optical axis and producing retinal reflections from the patient'"'"'s eyes;

    a beamsplitter positioned on said selected optical axis, said beamsplitter being operable to pass the flash beam of light from the flash unit to the patient'"'"'s eyes, and to pass the retinal reflections from the patient'"'"'s eyes to the lens of said photo-imaging device; and

    a visual stimulus generator operable to project a visual image on a surface of said beamsplitter, said projected visual image appearing to the patient'"'"'s eyes as being aligned on said selected optical axis and generally superimposed on the lens of said photo-imaging device at said predetermined focal distance whereby the patient'"'"'s eyes generally focus on the lens of said photo-imaging device while viewing the projected visual image to permit accurate retinal reflections from the patient'"'"'s eyes to be recorded by said photo-imaging device.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×